Home / 4,931.54-7,398.43-1,421.57

Finding the Fourth Proportional to 4,931.54, 7,398.43 and 1,421.57

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Solution

The fourth proportional to 4,931.54, 7,398.43 and 1,421.57 is: 2,132.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,931.54 : 7,398.43 = 1,421.57 : x
  2. Step 2: Convert to fraction form
    4,931.54/7,398.43 = 1,421.57/x
  3. Step 3: Cross multiply
    4,931.54x = 7,398.43 × 1,421.57
  4. Step 4: Simplify right side
    4,931.54x = 10,517,401.08
  5. Step 5: Solve for x
    x = 10,517,401.08/4,931.54
  6. Step 6: Final answer
    x = 2,132.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.